Lamp-house for projection-cameras.



H. DAVIS.

LAMP HOUSE FOR PROJECTION CAMERAS.

APPLICATION FILED NOV. 28. IBIS- Y Patented June 25, 1918,.

4 SHEETSSHEET 1..

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H. DAVIS.

LAMP HOUSE FOR PROJECTION CAMERAS.

APPLICATION FILED NOV-28,1916.

Patented June 25, 191&

4 SHEETS-SHEET 2.

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w A TTOR/VEVS H. DAVIS.

LAMP HOUSE FOR PROJ ECTION CAMERAS.

APPLICATION FILED NOV. 28.1916- Patented June 25, 1918.

4 SHEETS-SHEET 3.

S W" "'IHHHIHmmmuuml INVENTOR H. DAVIS. I LAMP HOUSE FOR PROJECTIONCAMERAS.

APPLICATION FILED NOV. 28. I916.

Patented June 25, 1918.

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rrE n ysr'rns ATENT OFFIGE.

HUGH nAvIs, OE ROCHESTER, NEW ORK, ASSIGNOR T EAsTMAN KODAK COMPANY, orROCHESTER, NEW YORK. A CORPORATION OF NEW YORK.

LAMP-HOUSE FOR PROJECTION-CAMERAS.

To all whom it may concern. r

Be it known that I, HUGH DAVIS, of

clear, and exact description of the same, reference beingjhad to theaccompanying forming a part of this-specificadrawings,

to the reference-numerals marked tion, and thereon. a

My present invention relates to photography and more particularly tophotographic 'enlargin image 0, a negative isprojected on an en.- largedscale on a sensitive medium for the for its object to provide animproved-lamp house for the projector that wlll ofl'er certainconveniences in the manipulation of the lamp and its appurtenances aswell'as adding to its efliciency. To these and other ends the inventionresides in certain improvements and combinations of parts all as will behereinafter more fully' described, the novel features being pointed outin the claim at the end of the specification.

In the drawings: 1 Figure 1 is a side elevation of an enlarging orprojection apparatus provided with a lamp house constructed inaccordance with and illustrating one embodiment ofmy invention;

Fig. 2 is an enlarged longitudinal central section through the lamphouse;

Fig.3 is a fragmentary horizontal section taken substantially on theline 33 .of Fi 2; L

substantially on the line 4'-4of Fig. 3

Fig. 5 is an enlarged detail section taken substantially on the line 5-5of Fig. 4;

Fig. 6 is arear elevation; V Fi 7 is a transverse section takensubstantlally on the line 7-7 of Fig: 2, and

Fig. 8 is a transverse section taken substantiallyon the line 88 of Fig.2; Similar reference numerals throughout the several viewsindicate thesame parts.

Referring first more particularly to Fig. 1,the pro ection camera as a.whole comprises'a base or bed 1, a body frame 2 in which the hiegativeis placed, as shown at 3 56 in Fig. 2, a forwardly arranged lens 4 on anSpecification of Letters Patent.

' Both shells cameras by means of which the ig. 4 is an enlarged detailsection taken Patented June 25, 1918.

* Application filed November 2a, 1916. Serial No. 133,969.

adjustable front 5, a bellows 6 connecting the.front and body frame, acasing 7 in rear of the latter for the reception of the diffusing andcondensing elements and a casing 8 in rear of the casing 7 and whichcasing houses the lamp. Both of the casings 7 and 8 are preferablycylindrical and embody shells held in supporting rings 9, 10 and 11.

The lam casing 8 consists of an outer shell 12 and an inner shell 13held in spaced relation by being clamped between the rings 10 and 11 bybolts 14 lying between them. are provided with openings 15 forventilation, gered relatively will'not permit to the exterior.

to each other so that they the direct passage of light The rear wall ofthe casing is formed by the ring 11 and by a detachwill hereinafter apear.

Within the cham er 13 and near its bottom are two guide rods 22supported in the ring- 11 and projecting forwardly and mov .able onthese rods is a sliding carriage 23 carrying alamp 24/ The lamp ismounted in the following manner. The carriage is yoke shaped with araised center upon whichis mounted a fixed pivot pin 25 (Figs. 4 and 5)on-which turns a bracket, 26. A forwardly extending arm 27 pivoted tothis which openings are stag bracket at 28 supports a vertical rod 29carrying at its lower end a forward extension 30 with a lamp socket 31thereon to which the lamp 24 is attached. There is a reflector 32 alsomounted onthe rod 29 in the present instance and provided with means foreffecting its vertical adjustment which adustment is, however,immaterial to the present invention. With this'construction it will beseen that the lamp 24 may be swung from side to side to adjust the lightby turning the bracket 26 on its pin 25 while the lamp maybe swung upand down by rocking the arm 27 on the pivot 28 of the bracket.

The bracket 26 is turned for the former purpose by "an adjusting rod 32threaded into a boss 33 on the carriage 23 that acts against an arm 34on the bracket. This arm is held door 16 and terminate exteriorly innuts 40. 11)

By grasping these together the carriage 23 may be slid longitudinally onthe guide rods 22 to carrythe lamp toward and from the negative 3 or brotating them individually,

the describedateral and vertical adjustments of the *lamp may beeffected. When the nuts 40 are removed the door 16 may be taken ofi byslipping 1t over the ends of the rodsleaving the lamp in-place on thedoor, when unlocked, can be detached while still on the rods when thelamp is removed from the casing by lifting it off of the guide rods 22.The nuts 40 are preferably made in two parts as indicated so that theycanbe locked against each other to revent them from coming OK when it isdesired to rotate the j rods'by means of them.

Carried rigidly on the carriage 23 is (a rearwardly' extending tube 41that passes out through the aperture 21 at the bottom of the door 16tothe exterior of "the casing 3 and the electric wires 43 for the lamp 24pass to the exterior through this tube, as

(shown, so that they are protected and prevented from-wear. "21. arepractically closed by the parts that The apertures 20 and pass throughthem against the escape of and conveniently per or cover portion of thecasing.

light and the members. 32; 38 and 41 in connection with them, serve asguides for holding the lamp carriage on the guide rods 22. The top ofthe casing 7 is semi circular and hinged to the bottom half at 44, as]

shown in Figs. Land 8,-the twoparts being secured togethe at the otherside by a suitable catch device 45. This casing is also composed ofouterand inner shells 46 and 47 and the inner one is provided atcircumferential intervals at each end withears48 that form seats for'thecondensing lenses 49 and'50. The ground glass or other difi'us ingelement 51 is seated between the rear lens 50 and the ring 10 and all ofthese parts may be placed in position or removed easily by swinging backthe up- I claim as my invention:

In a lamp house for-pro ection apparatus,

the combination with a casing having two guide rodsftherein and adetachable door provided withan aperture, of a lamp car- .riageslidableon the guide rods and detachable upwardly therefrom, a lamp adjustableon a horizontal pivot on the carriage and an operating rod. for bothadjusting the lamp and moving the-carriage extending closely peratin'grod and door may be re-e moved'together. A

through the aperture in the door so that the lamp,

Witnesses:

I rMAncxr idr DU'IGNAN, FRASER.

HUGH D14VIS.

